Satisfctory cosmetic results wrer obtained in cases after - times of treatment. They included 8 cases of facial lentig共治疗例病人，其中面部黑子8例，面部先天性色痣0例，面部咖啡斑例，Becker’s痣例，面部老年斑例，疣状痣例，汗孔角化症例。